CN102553574A - Method for preparing flue gas SCR (Selective Catalytic Reduction) denitration catalyst - Google Patents
Method for preparing flue gas SCR (Selective Catalytic Reduction) denitration catalyst Download PDFInfo
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- CN102553574A CN102553574A CN2012100141443A CN201210014144A CN102553574A CN 102553574 A CN102553574 A CN 102553574A CN 2012100141443 A CN2012100141443 A CN 2012100141443A CN 201210014144 A CN201210014144 A CN 201210014144A CN 102553574 A CN102553574 A CN 102553574A
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Abstract
The invention relates to a method for preparing a flue gas SCR (Selective Catalytic Reduction) denitration catalyst. The method comprises the following steps of: mixing ammonium metavanadate, oxalic acid, manganese salt and water for preparing a mixture solution, adding titanium dioxide powder into the mixture solution, heating in water bath and stirring, and obtaining mixed sol by standing at room temperature; putting the mixed sol into a microwave oven, heating and drying by utilizing microwave radiation; and putting dried solid into a muffle furnace for burning. According to the method disclosed by the invention, a temperature window of the SCR catalyst can be broadened to a low-temperature direction, the problems of low denitration efficiency at low temperature and narrow temperature window of a commercial catalyst are solved; compared with the traditional drying method, the microwave radiation heating and drying method has the advantages that low-temperature SCR denitration activity of the composite catalyst can be increased to a large extend, when the activity temperature is up to 250 DEG C, the denitration efficiency of the catalyst prepared by the traditional drying method is up to 51.9%, and the denitration efficiency of the catalyst can be increased by 31.7 percentage points and can be up to 83.6% by the microwave radiation heating and drying method.
Description
Technical field
The present invention relates to a kind of preparation method of denitrating catalyst, belong to gas denitrifying technology and microwave technical field.
Background technology
Nitrogen oxide is one of main atmosphere pollution, and it can cause pollutions such as acid rain, photochemical fog, and environment and human body are caused very big harm.Coal-burning power plant's nitrogen oxide emission accounts for the half the of China's total release, therefore, and the NO of control coal-burning power plant
xDischarge extremely urgent.At present, the technology of control coal-burning power plant discharged nitrous oxides mainly contains low NO
xBurner, combustion again, SNCR (SNCR) and SCR technology (SCR).Compare with denitration technologies such as denitration by refueling and SNCR denitrations, SCR has higher denitration efficiency, and more and more stricter NO is content with very little
xThe discharging national standard.Catalyst is the core of SCR technology, and its cost accounts for very big proportion in operating cost, and development of commercial catalyst at present and production are cost an arm and a leg by external monopolization.The existing denitrating catalyst production technology of China does not also reach requirement, becomes the principal element that restriction SCR technology is applied in China.So independent research produces SCR catalyst cheaply, can reduce the operating cost of China's denitrating flue gas significantly, the improvement of China's environment is played very big impetus.
Among the preparation technology of conventional catalyst for denitrating flue gas, generally adopt infusion process with TiO
2Put into the drying baker oven dry after stirring completion in the solution of powder immersion active component, calcining and grinding obtains required catalyst then.There is following problem in this method: catalyst required time in drying course is long, energy consumption is high; Moisture slowly evaporates, and very serious agglomeration appears in crystal grain, and the crystal grain gap subsides, and activity of such catalysts is produced bigger influence.And the vanadium titanium catalyst active temperature of this method preparation is higher, need be arranged in before the deduster, receives the grievous injury of pernicious gas and flying dust, and the lost of life influences the economy of denitrating flue gas.Adopt microwave radiant drying method effectively to address the above problem.
Summary of the invention
The objective of the invention is to combine advantages such as the microwave irradiation technology heating is rapid, no thermograde; Microwave irradiation technology is applied in the preparation of the SCR of power plant denitrating catalyst; And a kind of flue gas SCR denitration Preparation of catalysts method is provided; It is high that this method solves Preparation of catalysts energy consumption, and SCR denitration cost is high, commercial catalyst low-temperature denitration efficient low with problems such as the denitration temperature window is narrow.
The technical scheme that the present invention takes is:
A kind of flue gas SCR denitration Preparation of catalysts method comprises that step is following:
(1) ammonium metavanadate, oxalic acid, Mn salt are added water and be mixed and made into mixed solution, in mixed solution, add titania powder and water-bath heated and stirred, room temperature leaves standstill to make and contains NH then
4VO
3, TiO
2, Mn (NO
3)
2Mixed sols;
(2) mixed sols is put into the oven dry of micro-wave oven carry out microwave radiation heating;
(3) solid after the oven dry places Muffle furnace to calcine.
Ammonium metavanadate and oxalic acid mol ratio are 1: 1.5 in the above-mentioned steps (1), and every gram oxalic acid adds entry 90-140ml, and Mn salt consumption adds in the required ratio of experiment, and the main active component of catalyst is V
2O
5(NH
4VO
3Calcine afterproduct) and MnO
2(calcining afterproduct) makes wherein V
2O
5With TiO
2Mass ratio be 2-4%, MnO
2With TiO
2Mass ratio be 5%, the temperature of water-bath heating is 50-70 ℃, mixing time 1-3 hour; The time of leaving standstill is 8-13 hour.
Heating using microwave power is 200-300W in the step (2), and be 10-30min heat time heating time; Preferred 210W heating 20min.
The described calcining of step (3) is 400-600 ℃ of calcining 3-6 hour.
The present invention has the following advantages:
(1) carry out microwave radiation heating significantly shortens the time of sample oven dry, reduces energy consumption, and efficient improves and good economy performance; Technology is simple, and is easy to operate.
(2) during heating using microwave; Moisture absorption microwave energy in the sample is by gasification rapidly; Produce a large amount of steam in short time and can not in time get rid of, thereby the catalyst precursor internal pressure is increased and explosion takes place, thereby cause that aggregation is transformed into smaller particles; The carrying out that very helps the SCR denitration reaction, the denitration efficiency of raising catalyst.
(3) distribution of the sample crystal grain behind the microwave is more even, and decentralization is better, has increased the contact area of gas and catalyst, thereby the carrying out that SCR reacts accelerated in the absorption that helps gas; The pore structure of sample is more flourishing behind the microwave, can accelerate gas to the inner diffusion of catalyst, and the performance of catalyst is had bigger lifting.
(4) the method can be widened the temperature window of SCR catalyst to the low temperature direction; Solved the low and stenostomatous problem of temperature window of commercial catalyst low-temperature denitration efficient, compared with traditional drying, the carry out microwave radiation heating drying can increase substantially the low temperature SCR denitration activity of composite catalyst; During 250 ℃ of active temperatures; Prepared its denitration efficiency of catalyst of traditional drying is 51.9%, and the carry out microwave radiation heating drying makes its denitration efficiency improve 31.7 percentage points, reaches 83.6%.
Description of drawings
Fig. 1 catalyst denitration activity experimental provision system schematic;
Fig. 2 carry out microwave radiation heating drying is to the rule that influences of catalyst S CR denitration activity;
The SEM image of Fig. 3 carry out microwave radiation heating drying and conventional drying institute controlling catalyst;
The denitration activity figure of the different carry out microwave radiation heating of Fig. 4 flue gas SCR denitration catalyst under the time;
The denitration activity figure of flue gas SCR denitration catalyst under Fig. 5 different microwave;
Wherein, 1. mixer, 2. temperature controller, 3. thermocouple, 4. heating tape, 5. heat-insulation layer, 6. heating rope, 7. catalyst, 8. SPA groove, 9. filter, 10. flue gas analyzer, 11.O
2Bottle, 12.N
2Bottle, 13.NO bottle, 14.NH
3Bottle.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is further specified.
A kind of flue gas SCR denitration catalyst (2%V5%Mn/TiO
2) the preparation method, step is following:
With 215mg oxalic acid (C
2H
2O
4) add in the 30ml distilled water, stir and process oxalic acid solution, again with 133mg ammonium metavanadate (NH
4VO
3) be dissolved in the oxalic acid solution, constantly stir and process ammonium metavanadate-oxalic acid solution; With 1028mg manganese nitrate Mn (NO
3)
2Be dissolved in the above-mentioned solution that makes, then with 5gTiO
2Powder impregnation stirs 3h under 50 ℃ of condition of water bath heating in this mixed solution, make mixed sols (active component V
2O
5With TiO
2Mass ratio be 2%, MnO
2With TiO
2Mass ratio be 5%); With leaving standstill 8h in the mixed sols air that makes, the power of putting into micro-wave oven 210W then heats 20min down and gets solid; The gained solid is put into calcining 3h under 600 ℃ of air atmospheres of Muffle furnace, grind after the gained solid cooled, it is subsequent use that required size particles is got in screening.
A kind of flue gas SCR denitration catalyst (3%V5%Mn/TiO
2) the preparation method, step is following: with 322.5mg oxalic acid (C
2H
2O
4) add in the 35ml distilled water, stir and process oxalic acid solution, again with 199.5mg ammonium metavanadate (NH
4VO
3) be dissolved in the oxalic acid solution, constantly stir and process ammonium metavanadate-oxalic acid solution; With 1028mg manganese nitrate (Mn (NO
3)
2) be dissolved in the above-mentioned solution that makes, then with 5gTiO
2Powder impregnation stirs 2h under 60 ℃ of condition of water bath heating in this mixed solution, make mixed sols (active component V
2O
5With TiO
2Mass ratio be 3%, MnO
2With TiO
2Mass ratio be 5%); With leaving standstill 10h in the mixed sols air that makes, the power of putting into micro-wave oven 210W then heats 20min down and gets solid; The gained solid is put into calcining 5h under 500 ℃ of air atmospheres of Muffle furnace, grind after the gained solid cooled, it is subsequent use that required size particles is got in screening.
Embodiment 3
A kind of flue gas SCR denitration catalyst (4%V5%Mn/TiO
2) the preparation method, step is following: with 430mg oxalic acid C
2H
2O
4Add in the 40ml distilled water, stir and process oxalic acid solution, again with 266mg ammonium metavanadate NH
4VO
3Be dissolved in the oxalic acid solution, constantly stir and process ammonium metavanadate-oxalic acid solution; With 1028mg manganese nitrate Mn (NO
3)
2Be dissolved in the above-mentioned solution that makes, then with 5gTiO
2Powder impregnation stirs 1h under 70 ℃ of condition of water bath heating in this mixed solution, make mixed sols (active component V
2O
5With TiO
2Mass ratio be 4%, MnO
2With TiO
2Mass ratio be 5%); With leaving standstill 12h in the mixed sols air that makes, the power of putting into micro-wave oven 300W then heats 10min down and gets solid; The gained solid is put into calcining 6h under 400 ℃ of air atmospheres of Muffle furnace, grind after the gained solid cooled, it is subsequent use that required size particles is got in screening.
The denitration activity test:
Following in conjunction with Fig. 1 brief introduction denitration activity test procedure and condition:
(1) loading catalyst: take by weighing the 6ml catalyst and put into quartz ampoule, the both sides, front and back of catalyst place the quartz ampoule that installs in the experimental bench steel pipe with mineral wool calibration position and fixed catalyst bed.
(2) air tight test: only open N
2The valve of steel cylinder and flue gas analyzer feed gas and reach total tolerance that experiment is set, and all be full of N in the whole pipeline this moment
2, if O on the flue gas analyzer panel
2Be shown as 0, prove that then air-tightness is good.
(3) distribution: this tests used NO and NH
3Concentration is higher, need use to be N
2Carrier gas is set its dilution for experiment volume fraction, each gas flow is controlled by spinner flowmeter, and making NO is 0.1% (intrinsic standoff ratio), NH
3/ NO mol ratio is 1: 1, O
2Be 3% (intrinsic standoff ratio), total tolerance is 3000ml/min, and air speed is than being 30000h
-1
(4) SCR denitration experiment: preheat temperature is 100 ℃, and reaction temperature is 100～400 ℃, and temperature is controlled by intelligent temperature controller, and each temperature spot of experiment beginning back is all stablized 30-40min, makes NO and NH
3Can adsorb fully, get rid of inside and outside diffusion influence.
The 3%V5%Mn/TiO that 6ml embodiment 2 is made
2Catalyst places tubular fixed-bed reactor to react, and experiment condition is as follows:
Reaction condition is NO:1000ppm, NH
3: 1000ppm, O
2: 3%, N
2Be balance gas, total tolerance is 3L/min, and reaction velocity (GHSV) is 30000h
-1, reaction temperature is 100～400 ℃.NO adopts TY-2000 type flue gas analyzer to measure.The catalyst activity evaluation result is as shown in Figure 2.Experimental result shows: the microwave radiant drying can significantly promote the SCR denitration performance of vanadium manganese composite catalyst, has especially improved its low temperature active, and has widened its SCR denitration temperature window.Denitration efficiency is about 30% in the time of can knowing 100 ℃ of conventional drying institute controlling catalysts by Fig. 2, and the catalyst denitration efficiency of microwave radiant drying preparation is about 50%, improves about 20 percentage points; When reaction temperature was 250 ℃, the out of stock efficient of conventional catalyst was about 51%, and the denitration efficiency of microwave preparation catalyst reaches about 83%, improved about 30 percentage points.
Fig. 3 is the SEM electron-microscope scanning result of carry out microwave radiation heating drying and conventional drying institute controlling catalyst; Image result shows: the sample agglomeration behind the microwave obviously alleviates; Crystal grain diminishes, and crystal grain distributes more even, and decentralization is better; Increased the contact area of gas and catalyst, thereby the carrying out that SCR reacts accelerated in the absorption that helps gas; The pore structure of sample is more flourishing behind the microwave, can accelerate gas to the inner diffusion of catalyst, and the performance of catalyst is had bigger lifting.
The 2%V5%Mn/TiO that respectively 6ml embodiment 1 is made
2The 4%V5%Mn/TiO that makes with embodiment 3
2Catalyst places tubular fixed-bed reactor to react, and experiment condition is as follows:
Reaction condition is NO:1000ppm, NH
3: 1000ppm, O
2: 3%, N
2Be balance gas, total tolerance is 3L/min, and reaction velocity (GHSV) is 30000h
-1, reaction temperature is 100～400 ℃.Experimental result (H representes conventional oven dry, and-W representes microwave drying) as shown in table 1.
Experimental result in the table 1 shows the V for preparing under the microwave drying condition
2O
5It is high that load capacity is that 2% and 4% catalyst all makes the catalyst denitration efficiency than conventional drying.
The denitration activity of catalyst under table 1 different temperatures
Test 3
3%V5%Mn/TiO with 6ml preparation under the different microwave times
2Catalyst places tubular fixed-bed reactor to react, and experiment condition is as follows:
Reaction condition is NO:1000ppm, NH
3: 1000ppm, O
2: 3%, N
2Be balance gas, total tolerance is 3L/min, and reaction velocity (GHSV) is 30000h
-1, reaction temperature is 200～350 ℃.The SCR denitration activity of catalyst under the different temperatures when investigating microwave heating time 6～30min.The result shows that catalyst had all shown denitration activity preferably when the microwave time was 10～30min under each temperature, especially with the best results of the catalyst of microwave 20min.During by the visible microwave 20min of Fig. 4, catalyst has all shown the highest NO removal efficiency under 200～350 ℃ of temperature.
Test 4
With the 3%V5%Mn/TiO for preparing under the 6ml different microwave
2Catalyst places tubular fixed-bed reactor to react, and experiment condition is as follows:
Reaction condition is NO:1000ppm, NH
3: 1000ppm, O
2: 3%, N
2Be balance gas, total tolerance is 3L/min, and reaction velocity (GHSV) is 30000h
-1, reaction temperature is 200～350 ℃.The SCR denitration activity of catalyst under the different temperatures when investigation microwave power is 70～700W.The result shows when microwave power is 200～300W that activity of such catalysts is peak under each temperature.Can know that by Fig. 5 when microwave power was 200～300W, catalyst had all shown the highest NO removal efficiency under 200～350 ℃ of temperature.
As stated, embodiments of the invention have been carried out explanation at length, but as long as not breaking away from inventive point of the present invention and effect in fact can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation also all is included within protection scope of the present invention.
Claims (7)
1. a flue gas SCR denitration Preparation of catalysts method is characterized in that, comprises that step is following:
(1) ammonium metavanadate, oxalic acid, Mn salt are added water and be mixed and made into mixed solution, in mixed solution, add titania powder and water-bath heated and stirred, room temperature leaves standstill to make and contains NH then
4VO
3, TiO
2, Mn (NO
3)
2Mixed sols;
(2) mixed sols is put into the oven dry of micro-wave oven carry out microwave radiation heating;
(3) solid after the oven dry places Muffle furnace to calcine.
2. a kind of flue gas SCR denitration Preparation of catalysts method according to claim 1 is characterized in that, ammonium metavanadate and oxalic acid mol ratio are 1: 1.5 in the step (1), and every gram oxalic acid adds entry 90-140ml, NH
4VO
3, TiO
2, Mn (NO
3)
2Amount V that calcining back is generated
2O
5With TiO
2Mass ratio be 2-4%, MnO
2With TiO
2Mass ratio be 5%.
3. a kind of flue gas SCR denitration Preparation of catalysts method according to claim 1 is characterized in that, the temperature of water-bath heated and stirred is 50-70 ℃ in the step (1), time 1-3 hour.
4. a kind of flue gas SCR denitration Preparation of catalysts method according to claim 1 is characterized in that the time of leaving standstill in the step (1) is 8-13 hour.
5. a kind of flue gas SCR denitration Preparation of catalysts method according to claim 1 is characterized in that, carry out microwave radiation heating power is 200-300W in the step (2), and be 10-30min heat time heating time.
6. a kind of flue gas SCR denitration Preparation of catalysts method according to claim 5 is characterized in that, carry out microwave radiation heating power is 210W in the step (2), heating 20min.
7. a kind of flue gas SCR denitration Preparation of catalysts method according to claim 1 is characterized in that, the described calcining of step (3) is 400-600 ℃ of calcining 3-6 hour.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724149A (en) * | 2005-06-24 | 2006-01-25 | 湘潭大学 | Low temp. multiple component capalyst for flue gas denitration and its preparation process |
| CN101396655A (en) * | 2008-10-23 | 2009-04-01 | 清华大学 | Titanium-base multi-component catalyst for power plant flue-gas SCR denitration and preparation method thereof |
| CN101773837A (en) * | 2010-02-04 | 2010-07-14 | 环境保护部华南环境科学研究所 | Supported SCR denitration catalyst of medium and low temperature flue gas and preparation method and application thereof |
| CN101972649A (en) * | 2010-11-02 | 2011-02-16 | 浙江德纳希环保科技股份有限公司 | Vanadium manganese composite catalyst for removing nitrogen oxide in incineration gas and preparation method thereof |
-
2012
- 2012-01-17 CN CN2012100141443A patent/CN102553574B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724149A (en) * | 2005-06-24 | 2006-01-25 | 湘潭大学 | Low temp. multiple component capalyst for flue gas denitration and its preparation process |
| CN101396655A (en) * | 2008-10-23 | 2009-04-01 | 清华大学 | Titanium-base multi-component catalyst for power plant flue-gas SCR denitration and preparation method thereof |
| CN101773837A (en) * | 2010-02-04 | 2010-07-14 | 环境保护部华南环境科学研究所 | Supported SCR denitration catalyst of medium and low temperature flue gas and preparation method and application thereof |
| CN101972649A (en) * | 2010-11-02 | 2011-02-16 | 浙江德纳希环保科技股份有限公司 | Vanadium manganese composite catalyst for removing nitrogen oxide in incineration gas and preparation method thereof |
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| CN109647156B (en) * | 2018-12-28 | 2021-01-26 | 武汉理工大学 | Microwave high-temperature selective non-catalytic denitration device |
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| CN113198456B (en) * | 2021-04-28 | 2022-07-29 | 中国石油大学(北京) | Catalytic filtration composite element and preparation method and application thereof |
| CN113786703A (en) * | 2021-10-14 | 2021-12-14 | 辽宁科技大学 | Method for efficiently adsorbing and purifying flue gas by using microwave outfield and industrial waste residues |
| CN113786703B (en) * | 2021-10-14 | 2022-11-11 | 辽宁科技大学 | Method for efficiently adsorbing and purifying flue gas by using microwave outfield and industrial waste residues |
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